... The fitting package in STSDAS (Space Telescope Science Data Analysis System) relies on two basic techniques (one linear and one non-linear) for fitting functions to data. ... Results show that both methods may generate biased coefficients (at the ~few percent level), and over or under-estimate error bars (at the ~10 percent level), in particular from low signal-to-noise data. ... Function coefficient errors are computed directly from the covariance matrix. ... Abscissa is signal-to-noise. ...

... The compression of iflo/ lband receivers (lband wide , lband narrow) was measured on 29apr03. ... Center a band at 1415 Mhz and pass it through a 5 Mhz IF filter (centered at 260 MHz). ... Center another band at 1350,1330 Mhz. ... The 1350 data was normalized to full scale while the 1415 Mhz data was normalized to medianTsys -1 (so the radar 1350 scale and the 1415 Mhz scale are not the same). ... You can see the double bumps in the faa radar (this is the 1350 then 1330 pulses spaced by 6 usecs). ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . des actualit–їs . ... Accueil Deux com–Rtes foncent vers la Terre . ... Le 22 mars, la com–Rte P/2016 BA14 PanSTARRS fr–?le la Terre –Љ moins de 10 fois la distance Terre-Lune, soit 3,4 millions de kilom–Rtres. ... Ce n'est qu'–Љ partir du 1er avril qu'il devient possible d'observer la com–Rte sous un ciel sans Lune. ... La coma est en quelque sorte l'atmosph–Rre des com–Rtes. ... Etat du ciel . ...